Diorama

The word diorama can either refer to a nineteenth-century mobile theatre device, or, in modern usage, a three-dimensional full-size or miniature model, sometimes enclosed in a glass showcase for a museum. Dioramas are often built by hobbyists as part of related hobbies such as military vehicle modeling, miniature figure modeling, or aircraft modeling.

Read more about Diorama:  Etymology, The Modern Diorama